Table 1. Labels and identification numbers of the specimens used for generating stat-tracks and mediotypes.

For each figure of this work are reported the number of tracks used to generate stat-tracks and mediotypes, together with their labels. (h) indicated the holotype of an ichnotaxon; (p) indicates a paratype of an ichnotaxon. Tracksite abbreviations: BSY, Bois de Sylleux; TCH, Tchâfoué; SCR, Sur Combe Ronde. More information in the Supplemental Information 1.

Mediotype	N. of tracks	Track IDs
Tiny sauropod (Fig. 1A)	10	BSY1040-S20-RP8, BSY1040-S20RP9, BSY1040-S21-LP6, BSY1040-S1-RP8, BSY1040-S2-RP6, BSY1040-S2-LP7, BSY1040-S3-LP3, BSY1040-S3-LP5, BSY1040-S25-RP1, BSY1040-S6-LP3
Medium sauropod (Fig. 1B)	9	BSY1040-S12-LP2, BSY1040-S12-RP2, BSY1040-SS12-LP3, BSY1040-S14-RP6, BSY1040-S16-LP6, TCH1055-S1-RP3, TCH1055-S1-RP4, TCH1055-S2-LP2, TCH1055-S5-RP2
Laetoli G1 (Fig. 2)	11	G1-23, G1-25, G1-26, G1-27, G1-31, G1-33, G1-34, G1-35, G1-36, G1-37, G1-39
Laetoli tracks (Fig. 3)	22	G1-23, G1-25, G1-26, G1-27, G1-33, G1-34, G1-35(M), G1-36, G1-37, G1-39, G2-18, G2-26, G2-27, G2-28, G2-29, L8-S1-1, L8S1-2, L8S1-3, L8S1-4, TP2S1-1, TP2S1-2, TP2S1-4
J. curtedulensis (Fig. 4B)	4	SCR1500-T1-L8 (h), SCR1500-T1-L7, SCR1500-T1-R7, BSY1050-TR2-R3
J. curtedulensis (Fig. 4C)	7	SCR1500-T1-R3, SCR1500-T1-L4, SCR1500-T1-R4, SCR1500-T1-L5, SCR1500-T1-L7 (p), SCR1500-T1-R7 (p), SCR1500-T1-L8 (h)
M. transjuranicus (Fig. 5)	7	TCH1030-T6-L1 (h), TCH1030-T7-L2, BSY1040-T1-R1, TCH1025-T2-L1, TCH1030-T2-R2, TCH1030-T2-L3, BSY1035-T6-L2